package com.ruoyi.netty;

import com.ruoyi.netty.handler.WebSocketHandler;
import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.Channel;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.ChannelPipeline;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.group.ChannelGroup;
import io.netty.channel.group.DefaultChannelGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.SocketChannel;
import io.netty.channel.socket.nio.NioServerSocketChannel;
import io.netty.handler.codec.http.HttpObjectAggregator;
import io.netty.handler.codec.http.HttpServerCodec;
import io.netty.handler.codec.http.websocketx.WebSocketServerProtocolHandler;
import io.netty.handler.stream.ChunkedWriteHandler;
import io.netty.util.concurrent.GlobalEventExecutor;

import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;

/**
 * @author Zoo
 */
public class NettyServer {

    public static final Map<String, Channel> USERS = new ConcurrentHashMap<>(1024);

    public static final ChannelGroup GROUP = new DefaultChannelGroup(GlobalEventExecutor.INSTANCE);


    public static void  start() throws InterruptedException {
        EventLoopGroup boss = new NioEventLoopGroup();
        EventLoopGroup worker = new NioEventLoopGroup();

        //端口绑定
        ServerBootstrap bootstrap = new ServerBootstrap();
        bootstrap.group(boss,worker)
                .channel(NioServerSocketChannel.class)
                .childHandler(new ChannelInitializer<SocketChannel>() {
                    @Override
                    protected void initChannel(SocketChannel socketChannel) throws Exception {
                        ChannelPipeline pipeline = socketChannel.pipeline();
                        //添加http编码解码器
                        pipeline.addLast(new HttpServerCodec())
                                //支持大数据流
                                .addLast(new ChunkedWriteHandler())
                                //对http消息做聚合操作 FullHttpRequest,FullHttpResponse
                                .addLast(new HttpObjectAggregator(1024*64))
                                //websocket
                                .addLast(new WebSocketServerProtocolHandler("/ws"))
                                //
                                .addLast(new WebSocketHandler());
                    }
                });

        bootstrap.bind(12424).sync();
    }
}
